<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>拉伸动画</title>
		<style >
			.transitionbox{
				margin: 200px;
				width: 100px;
				height: 100px;
				border-radius: 50px;
				background-color: #00FFFF;
				/*拉伸动画效果,height=纵向，width=横向*/
				transition:1.5s;
				
			}
			/*鼠标移入div触发动画执行*/
			.transitionbox:hover{
				margin: 50px;
				height: 400px;
				width: 400px;
				border-radius:500px ;
			}
		</style>
	</head>
	<body>
		<h3>拉伸盒子动画效果</h3>
		<h5>transition它有两个参数，拉伸方向width，2s动画执行时间</h5>
		
		<div class="transitionbox" >
			
		</div>
	</body>
</html>
